[bantunes]

Again, if you "pass laws about whom their citizens can trade with" isn't that having jurisdiction over a foreign company?

[golemotron]

Not at all. They never are subject to an enforceable court decision. Your citizens, on the other hand, are.

[bantunes]

From the point of view of the consumer, if a government passes a law saying you can't buy abroad from Company X, sure feels like jurisdiction over it.

[golemotron]

Let's do it that way then. Problem solved.